Acetic Acid → HCID 178425118, compound

HRID 874449Notes

Reaction equation

HRID 874449 reaction equation
[NH2:1][C:2]1[CH:3]=[CH:4][N:5]([CH3:27])[C:6]2[C:7]=1[CH:8]=[CH:9][C:10]1[N:19]([C:20]3[CH:25]=[CH:24][C:23]([F:26])=[CH:22][CH:21]=3)[CH2:18][CH:17]=[C:12]3[NH:13][C:14](=[O:16])[C:15]=2[C:11]=13.C(O)(=O)C.C([BH3-])#N.[Na+].[CH3:36][C:37]1[N:42]=[C:41]([CH:43]=O)[CH:40]=[CH:39][CH:38]=1>>[F:26][C:23]1[CH:22]=[CH:21][C:20]([N:19]2[C:10]3=[C:11]4[C:15](=[C:6]5[N:5]([CH3:27])[CH:4]=[CH:3][C:2]([NH:1][CH2:43][C:41]6[CH:40]=[CH:39][CH:38]=[C:37]([CH3:36])[N:42]=6)=[C:7]5[CH:8]=[CH:9]3)[C:14](=[O:16])[NH:13][C:12]4=[CH:17][CH2:18]2)=[CH:25][CH:24]=1

Participants

5

Reactant 4

HCID 176Acetic AcidHCID 707376-Methyl-2-pyridinecarboxaldehydeHCID 5003444Sodium cyanoborohydrideHCID 178480427HCID 178480427, compound

Product 1

HCID 178425118HCID 178425118, compoundYield 44%

Procedure

A stock solution of Example 23e (0.164 M in N,N-dimethylacetamide, 255 mL, 0.042 mmol), acetic acid (4 M in methanol, 200 mL, 0.84 mmol), sodium cyanoborohydride (0.31 M in methanol, 200 mL, 0.063 mmol) and 6-methylpicolinaldehyde (0.40 M in N,N-dimethylacetamide, 156 mL, 0.063 mmol) were aspirated from their respective source vials, mixed through a perfluoroalkoxy mixing tube (0.2 mm inner diameter), and loaded into an injection loop. The reaction segment was injected into the flow reactor (Hastelloy coil, 0.75 mm inner diameter, 1.8 mL internal volume) set at 50° C., and passed through the reactor at 180 μL per minute (10 minute residence time). Upon exiting the reactor, the reaction mixture was loaded directly into an injection loop and purified by reverse phase HPLC(C8, acetonitrile/water (0.1% ammonium acetate), 5-100%) to give 0.0085 g (44%) of the title compound. 1H NMR (400 MHz, DMSO-d6/D2O) δ 10.85 (s, 1H), 8.41 (d, J=1.83 Hz, 1H), 7.96 (s, 1H), 7.81 (dd, J=8.24, 1.83 Hz, 1H), 7.38 (m, 2H), 7.04 (s, 1H), 6.87 (m, J=9.00, 9.00 Hz, 3H), 6.58 (m, 3H), 4.58 (m, 2H), 4.06 (s, 3H), 3.90 (s, 3H), 3.17 (s, 2H). MS (APCI+) m/z 466.1 (M+H)+.

Workup

  1. additionmixed through a perfluoroalkoxy mixing tube (0.2 mm inner diameter)
  2. customset at 50° C.
  3. custompassed through the reactor at 180 μL per minute (10 minute residence time)
  4. custompurified by reverse phase HPLC(C8, acetonitrile/water (0.1% ammonium acetate), 5-100%)

Sources & evidence

ORD record
ord-82d8b50a45d1413c9cd310e2d4dd90d0
Source dataset
uspto-grants-2015_03
Patent number
US08980879B2

Reaction notes

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